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Period in the Periodic Table.
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Why did Mendeleev called his arrangement of elements the periodic table?
If the elements (which were discovered by his time) were organized in the increasing order of their atomic weight, they will exhibit an apparent periodicity of properties. It also had the ability to predict physical and chemical properties of some undiscovered elements.
What elements have symbols that are the same as the element?
There are only two elements whose names start with the same letter: Tin (Sn) and Titanium (Ti).
Does the identity of an uncharged atom change when it becomes an ion?
No. It is still that element with its unique number of protons (atomic number), but the numbers of electrons and protons are no longer equal and it will form an ionic bond with an ion of opposite charge. This will form an ionic compound, whose properties are different from the individual elements of which it is made, but the elements themselves do not change.
What column contains elements whose electron configuration end with d4?
The column that contains elements whose electron configuration ends with d4 is the "transition metals" column. Transition metals have partially filled d orbitals in their electron configurations, typically with the d orbitals being filled first before the s and p orbitals.
What are the elements whose discovery added an entirely new row to Mendeleev's periodic table?
The discovery of gallium (Ga), scandium (Sc), and germanium (Ge) were instrumental in adding a new row to Mendeleev's periodic table because their properties helped fill in the gaps and support the periodic law at the time.
Does a period contain elements that are similar?
no. A period is a row of elements in the periodic table whose properties change gradually and predictably.
A Row of elements in the periodic table whose properties change gradually and predictability?
The rows on the Periodic table are called "periods" and the increasing atomic number across a period represents additions to the electron orbitals, which cause the properties manifested by individual elements (elements of the same group, or column, have similar properties).
How does the number of the outer energy level electrons relate to the properties of elements?
Elements whose atoms have the same number of outer electrons have similar properties..
How does the number of outer energy level electrons related to the properties of elements?
Elements whose atoms have the same number of outer electrons have similar properties..
What is an element whose physical properties are generally opposite to metals?
These chemical elements are nonmetals.
What is a substance produced when elements combine and whose properties are different?
That would be a compound. Combine the elements of hydrogen and oxygen, and get a compound (water) that is quite different from the two gasses you started with.
Why did Mendeleev called his arrangement of elements the periodic table?
If the elements (which were discovered by his time) were organized in the increasing order of their atomic weight, they will exhibit an apparent periodicity of properties. It also had the ability to predict physical and chemical properties of some undiscovered elements.
What is the anisotropy of properties?
the property of elements whose intensity depends upon the direction of layers of atoms.. example the cleavage plane,electrical conductivity...
Are metalloids precious metals?
No. They are elements (e.g., arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
What is the name of the two compounds whose elements properties change when they are combined?
Hydrogen (H2) and Oxygen (O2) have both 0. In the combined compound H20 or water (by combustion), H has (+1) and O has (-2). The biological relevance is seen in e.g. Knallgas-bacteria.
What is it called when two elements whose atoms are chemically bonded form?
When two elements chemically bond to form a compound, it is known as a chemical reaction. During this process, atoms from each element combine to form new molecules with different properties than the original elements.
Name the elements whose atomic masses corrected by mendeleev?
The atomic masses corrected by Mendeleev are those of beryllium, indium, and uranium. Mendeleev was able to accurately predict the properties of these elements based on their corrected atomic masses.
